Improvement in lamps



W. G. STERLING.

I Lamp;

Patented Oct. 20, 1863.

00 6 u o w N PEI :RSL her. Washington, a. c.

UNITED STATES PATENT OFFICE.

W. G. STERLING, OF BRIDGEPORT, CONNECTICUT.

IMPROVEMENT IN LAMPS.

Specification forming part of Letters Patent No. 40,368, dated October 20, 1863.

To all whom it may concern.-

Be it known that I, W. STERLING, of Bridgeport, Fairfield county, State of Connecticut, have invented an Improvement in Lamps, which is a further improvement on a lamp for which Letters Patent of the United States were granted to me March 17, A. D. 1863, No. 37,928, and I do herebydeclare that the following is a full and exact description of my invention, reference being bad to the drawings annexed.

Figure 1 is a representation of the top of the lamp and wick-tube. Fig. 2 is aside view of the burner. Fig. 3 is an end view of the burner detached. Fig. 4 is the tube detached from the burner. Fig. 5 is the non-conductor of heat detached. Fig. 6 is the perforated disk detached.

My invention consists in the employment of the perforated tube directly under the skeleton bridge or flame-spreader, of sufficient diameter to admit an air chamber or'space between the wick-tube and this perforated tube; also, the employment of the perforated disk under the burner surrounding the wicktube, all so arranged as to produce a good illuminating-flame.

Similar letters indicate corresponding parts.

Fig. 1 represents the top of the lamp; A, the collar, which can be attached to the neck of the lamp; B, the top which is screwed into the collar A C, the wicktube D, the wheelpin to adjust the wick, all of which are com mon in ordinary lamps. A

H represents what may be term ed the skeleton bridge or flame-spreader, the ends of which are attached to the plateor cap near its edge, either by pins or pivots, or firmly attached thereto. This skeleton bridge approximatrs in form to a parabola, and is composed of two side strips, which approach each other at their center and highest point, so as to leave a narrower space for a flame at the center of the skeleton bridge, which greatly improves the brilliancy of the light.

In Figs. 2 and 3,1etterE represents the plate or cap which may be round or other proper shape. This plate or cap has a perforated tube, G, attached centrally to it, and projecting up a sufficient distance, being larger than the wick-tube, so as to admit a small air chamber or space between the tubes, as shown in. Fig. 2 at c. This tube could be used without the perforations by elevating it from the cap, so as to allow a current of air to pass up through it, but when perforated it gives the best light. This plate or cap is isolated from the wick-tube by the non-conductor K, Figs. 2 and 5, which is firmly secured under the cap or plate. This insulater can be made of any nonconducting suitable material.

In Figs. 2 and 6,1etterL represents the perforated disk, which surrounds the wick-tube between the burner and top of the lamp.

The bars of the skeleton bridge impinging the flame at the center or highest point of the bridge and the heated current from thesmall tube surrounding the wick-tube and the perforated disk, cause a very bright and brilliant light, free from smoke or odor.

The non conducting material under the plate maybe dispensed with and the skeleton bridge attached directly to the top of the lamp, but I prefer its use, as it prevents the lamp from heating.

Ido not claim any features or parts to be found in my patent of March 17, 1863, or in the patent of A. N. Henderson, February 17, 1863, or John Jacob Miller, March 10, 1863; but

- What I claim is- The combination of the skeleton bridge H with the tube G, and also in combination with the disk L, to operate substantially as described.

W. G. STERLING. 

